isotope; variant of chemical element
Tone colorsmāmámǎmàma
Meanings
1 sense · 3 examplesnoun
isotope; one of two or more species of atoms of a chemical element with the same atomic number and position in the periodic table but different atomic masses due to different numbers of neutrons
technicalA fundamental concept in nuclear chemistry and physics. Isotopes may be stable or radioactive. The term is often used in contexts of radiometric dating, nuclear medicine, and nuclear energy.
Tàn碳
shí-
sì1
shì4
yī是
zhǒng一
fàng种
shè放
xìng射
tóng性
wèi同
sù位
cháng素
，
yòng常
yú用
kǎo于
gǔ考
xué古
zhōng学
de中
nián的
dài年
cè代
dìng测
定
。
Carbon-14 is a radioactive isotope commonly used for dating in archaeology.
Yóu铀
èr-
sān2
wǔ3
hé5
yóu和
èr铀
sān-
bā2
shì3
yóu8
yuán是
sù铀
de元
liǎng素
zhǒng的
zhǔ两
yào种
tóng主
wèi要
sù同
位
素
。
Uranium-235 and Uranium-238 are the two main isotopes of the element uranium.
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Yī医
shēng生
shǐ使
yòng用
fàng放
shè射
xìng性
tóng同
wèi位
sù素
lái来
jiǎn检
chá查
huàn患
zhě者
de的
xīn心
zàng脏
gōng功
néng能
。
Doctors use radioactive isotopes to examine the heart function of patients.